Serhiy Tkach was a former police inspector from the Ukraine, who became a serial killer throughout his career. He admitted to have killed up to 100 young girls.

Although he demanded a death penalty for himself, the court sentenced him to 36 life sentences - for documented 36 murders of young girls. Before he was asked by the police, nine innocent men were convicted for his killings - one of the men committed suicide during his detention.

After a one-year trial in Dnipropetrovsk, he was sentenced in 2006 to life in prison.